This Allstar 9921T / BA9911T-318 is a single button visor style remote control that operates on the 318MHz radio frequency.

The 9921T is compatible with Allstar, Allister, Pulsar, Heddolf, GTO and Mighty Mule code switch type radio receivers. This unit can control one Allstar, Allister, Pulsar, GTO or Mighty Mule 9 three position binary (ON/OFF) type code switch devices on the 318MHz frequency.